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//This file contains the kernel's main procedure
#include <common.h>
#include <Core/multiboot.wtf.h>
#include <Devices/Display/VGATextOutput.class.h>
#include <Devices/Display/VESADisplay.class.h>
#include <Devices/Keyboard/PS2Keyboard.class.h>
#include <Devices/Floppy/FloppyDrive.class.h>
#include <Devices/ATA/ATAController.class.h>
#include <Devices/Timer.class.h>
#include <DeviceManager/Disp.ns.h>
#include <DeviceManager/Dev.ns.h>
#include <DeviceManager/Kbd.ns.h>
#include <DeviceManager/Time.ns.h>
#include <VTManager/ScrollableVT.class.h>
#include <VTManager/FileVT.class.h>
#include <MemoryManager/PhysMem.ns.h>
#include <MemoryManager/PageAlloc.ns.h>
#include <MemoryManager/GDT.ns.h>
#include <TaskManager/Task.ns.h>
#include <UserManager/Usr.ns.h>
#include <SyscallManager/IDT.ns.h>
#include <String.class.h>
#include <ByteArray.class.h>
#include <Rand.ns.h>
#include <VFS/Part.ns.h>
#include <FileSystems/RamFS/RamFS.class.h>
#include <FileSystems/FAT/FATFS.class.h>
#include <VFS/FileNode.class.h>
#include <VFS/VFS.ns.h>
#include <VFS/DirectoryNode.class.h>
#include <Core/Log.ns.h>
#include <Core/SB.ns.h>
#include <Shell/KernelShell.class.h>
#include <Map.class.h>
#include <Ressources/Graphics/logo.text.cxd>
extern u32int end; //Placement address
extern "C" void kmain(multiboot_info_t* mbd, u32int magic);
SimpleVT* kvt;
void kmain(multiboot_info_t* mbd, u32int magic) {
DEBUG("Entering kmain.");
if (magic != MULTIBOOT_BOOTLOADER_MAGIC) {
Mem::placementAddress = (u32int)&end; //Setup basic stuff so that PANIC will work
VGATextOutput *vgaout = new VGATextOutput();
Disp::setText(vgaout);
PANIC("Error with multiboot header.");
}
//Setup placement address so that we can use new without overwriting modules
Mem::placementAddress = (u32int)&end;
mbd->cmdline += 0xC0000000; mbd->mods_addr += 0xC0000000; //Take stuff into acount
module_t *mods = (module_t*)mbd->mods_addr;
for (u32int i = 0; i < mbd->mods_count; i++) {
mods[i].mod_start += 0xC0000000;
mods[i].mod_end += 0xC0000000;
if (mods[i].mod_end > Mem::placementAddress)
Mem::placementAddress = mods[i].mod_end + 0x1000;
}
//************************************** BASIC KERNEL SETUP
//Create text output
VGATextOutput *vgaout = new VGATextOutput();
Disp::setText(vgaout);
SB::init();
//Create a VT for logging what kernel does
SB::progress("Create kernel VT");
kvt = new ScrollableVT(24, 80, 20, KVT_FGCOLOR, KVT_BGCOLOR);
kvt->map(1, 0);
*kvt << MVT::setcolor(TXTLOGO_FGCOLOR, TXTLOGO_BGCOLOR);
for (int i = 0; i < melonLogoLines; i++) {
*kvt << MVT::setcsrcol(40 - (melonLogoCols / 2));
*kvt << melonLogo[i] << "\n";
}
*kvt << MVT::setcolor(KVT_FGCOLOR, KVT_BGCOLOR);
SB::progress("IDT");
IDT::init(); //Setup interrupts
SB::progress("Paging");
u32int totalRam = ((mbd->mem_upper + mbd->mem_lower) * 1024);
PhysMem::initPaging(totalRam); //Setup paging
SB::progress("GDT");
GDT::init(); //Initialize real GDT, not fake one from loader.wtf.asm
PhysMem::removeTemporaryPages(); //Remove useless page mapping
SB::progress("Heap");
Mem::createHeap(); //Create kernel heap
Dev::registerDevice(vgaout);
SB::progress("Timer");
Dev::registerDevice(new Timer()); //Initialize timer
String kcmdline((char*)mbd->cmdline);
SB::progress("Multitasking");
Task::initialize(kcmdline, kvt); //Initialize multitasking
SB::gomulti();
asm volatile("sti");
//*************************************** PARSE COMMAND LINE
SB::progress("Parse command line");
Vector<String> opts = kcmdline.split(" ");
String keymap = "builtin", init = DEFAULT_INIT;
String root = DEFAULT_ROOT;
Vector<String> mount;
bool enableVESA = DEFAULT_ENABLEVESA;
for (u32int i = 0; i < opts.size(); i++) {
Vector<String> opt = opts[i].split(":");
if (opt[0] == "vesa" && opt[1] != "enabled") enableVESA = false;
if (opt[0] == "keymap") keymap = opt[1];
if (opt[0] == "init") init = opt[1];
if (opt[0] == "root") root = opts[i].substr(5);
if (opt[0] == "mount") mount.push(opts[i].substr(6));
}
//*************************************** DEVICE SETUP
SB::progress("Keyboard"); Dev::registerDevice(new PS2Keyboard()); //Initialize keyboard driver
Kbd::setFocus(kvt); //Set focus to virtual terminal
SB::progress("VESA"); if (enableVESA) Dev::registerDevice(new VESADisplay());
SB::progress("Floppy"); FloppyController::detect();
SB::progress("Hard disk drives"); ATAController::detect();
//*************************************** MOUNT FILESYSTEMS
SB::progress("Root filesystem");
{ // mount root filesystem
if (!VFS::mount(String("/:") += root, kvt, mbd)) PANIC("Cannot mount root filesystem.");
}
DirectoryNode* cwd;
cwd = VFS::getRootNode();
Task::currProcess()->setCwd(cwd);
SB::progress("File systems");
// mount other filesystems
for (u32int i = 0; i < mount.size(); i++) {
VFS::mount(mount[i], kvt, mbd);
}
{
TextFile mounts("/System/Configuration/Mount", FM_READ);
while (mounts.valid() && !mounts.eof()) {
String m = mounts.readLine();
if (!m.empty() && m[0] != WChar("#")) VFS::mount(m, kvt, mbd);
}
}
//*************************************** LOAD SYSTEM STUFF
SB::progress("Logging");
Log::init(KL_STATUS); //Setup logging
Log::log(KL_STATUS, "kmain : Melon booting.");
if (keymap != "builtin") {
SB::progress("Keymap");
if (!Kbd::loadKeymap(keymap)) Log::log(KL_WARNING, String("WARNING : Could not load keymap ") += keymap += ", using built-in keymap instead.");
}
SB::progress("Users");
Usr::load(); //Setup user managment
Log::log(KL_STATUS, "kmain : User list loaded");
SB::progress("Video mode selection");
Disp::selectMode();
if (init.empty()) {
SB::progress("Start kernel shell");
*kvt << "\n";
new KernelShell(cwd, kvt);
SB::message("Melon is running");
while (KernelShell::getInstances() > 0) {
Task::currThread()->sleep(100);
}
Sys::halt();
} else {
SB::progress("Launch INIT");
Process* p = Process::run(init, 0);
if (p == 0) {
PANIC((char*)(u8int*)ByteArray(String("Could not launch init : ") += init));
} else {
Log::log(KL_STATUS, String("kmain : Starting init : ") += init);
p->setInVT(kvt);
p->setOutVT(kvt);
p->start();
SB::message("Init started");
while (p->getState() != P_FINISHED) Task::currThread()->sleep(100);
PANIC("Init has terminated");
}
}
PANIC("END OF KMAIN");
}
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